California Bordered Plant Bug

California Bordered Plant Bug

Largus californicus

Daily sighting probability ~20% · Possible
at Joshua Tree National Park

In 3 days ~40% in a week ~70%

58 Verified sightings at Joshua Tree National Park From 2019 to 2026
119 In all 5 parks
December Best month
☀️ Diurnal When it's spotted

About the California Bordered Plant Bug

Largus californicus, also known as the California bordered plant bug, is a species of bordered plant bug in the family Largidae. It is found in western North America, as well as parts of Central America. They measure around 2.5 cm (0.98 in) in length. Adults have a black exoskeleton with orange edges on the thorax and abdomen. Nymphs are metallic blue, later with a red spot at the base of the abdomen. They are indistinguishable in appearance from Largus cinctus. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Joshua Tree National Park 🇺🇸 United States
~20%
2 Channel Islands National Park 🇺🇸 United States
~20%
3 Sequoia and Kings Canyon National Parks 🇺🇸 United States
~10%
4 Yosemite National Park 🇺🇸 United States
~10%
5 Saguaro National Park 🇺🇸 United States
<5%

Cities Where Found

# City Country Daily sighting probability
1 Las Vegas 🇺🇸 United States
<5%
2 Sacramento 🇺🇸 United States
<5%
3 Mesa 🇺🇸 United States
<5%
4 Guadalajara 🇲🇽 México
<5%
5 Los Angeles 🇺🇸 United States
<5%
6 Phoenix 🇺🇸 United States
<5%
7 San Francisco 🇺🇸 United States
<5%
8 San Diego 🇺🇸 United States
<5%
9 Mexico City 🇲🇽 México
<5%
10 Portland 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a California Bordered Plant Bug in Joshua Tree National Park?

Possible

About 20% of wildlife watchers report a California Bordered Plant Bug sighting in Joshua Tree National Park on a given day, based on 58 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 33rd most-seen of the 190 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.

When is the best time to see a California Bordered Plant Bug in Joshua Tree National Park?

November and December

In those months about 30% of wildlife watchers report a California Bordered Plant Bug in Joshua Tree National Park on a given day, against about 10% in January–February, April–May and July–September, the lowest months.

What time of day is best to see a California Bordered Plant Bug?

Between noon and 3 pm

Across all the parks we cover, that three-hour window holds the most California Bordered Plant Bug sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Joshua Tree National Park the best place to see a California Bordered Plant Bug?

Yes

Of the 5 parks where we can rate California Bordered Plant Bug sightings, Joshua Tree National Park has the highest daily chance: about 20%. Next come Channel Islands National Park (United States, about 20%) and Sequoia and Kings Canyon National Parks (United States, about 10%).

Which relatives of the California Bordered Plant Bug live in Joshua Tree National Park?

Same order: Hemiptera

The closest relatives of the California Bordered Plant Bug that you can see in Joshua Tree National Park (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Western Leaf-Footed Bug (about 20%), Oak Wax Scale (about 20%) and Cactus Coreid Bug (about 10%), with each one's daily chance of a sighting.

Where does the California Bordered Plant Bug sighting chance come from?

GBIF citizen-science records

It is estimated from how often the California Bordered Plant Bug is recorded against all the insects logged in Joshua Tree National Park (58 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

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